The pair spoke to officers at police stations in the county and London but no arrests were made.

Mr Huhne has denied asking Miss Pryce to take three points for him after being caught speeding so he would not lose his licence.

A conviction for the Liberal Democrat, who was an MEP at the time, could have damaged his chance of a seat at Westminster.

Mr Huhne is believed to have flown into Stansted in Essex on the day the offence took place while Miss Pryce is understood to have been in London.

A photograph of her driving licence showing a three-point fixed penalty offence on March 12, 2003 â the date Mr Huhneâs car is alleged to have been caught by a speed camera on the M11 in Essex â was published at the weekend.

Ms Pryce, a senior economist whom the minister left for another woman last year, is now believed to be claiming she was not at the wheel.

Friends of Miss Pryce claim one of their grown up children can remember Mr Huhne getting his wife to take the points and could also testify against him.